I tried it with my MSI 7300GT (256MB) but unfortunately it didn't work either.I've read about a bug of Nvidia cards not reading any EDID on the second channel. The (newer) driver (Windows and obviously OSX) can handle it, so once the drivers get loaded the system gets its EDID. This is a bug which effects a lot of cards in particular those with the DVI on the second channel like mine (the port being further away from motherboard).Note: I tried moninfo.exe as (dos) well as powerstrip (win) - none of them are getting an EDID when connected to the DVI port whereas connected to the VGA it works (even chameleon offers higher resolutions then).

So my question is, if there's any possibility to hardcode an EDID (read from ioregistry) into chameleon?Also is the restart fix integrated? My system completely shuts down for a sec and powers up again with this bootloader like it did with older ones before (I guess this is the 'restart fix'). Another issue I noticed it that I got another a new system id.

Thanks a lot, it would be fantastic to get this resolution problem solved eberts

I tried to make an override using GraphicsMode key but something seem to go wrong with the timing calculation. I tried gtf, cvt with and without reduced blanking and it just continuously reboot. So this function is deactivated in the update.

@Ezhoon, since when you tested the patch there were bug that would have prevented your system to boot if patch didn't work (no EDID), I think that for some reason, your EDID doesn't contain your native resolution. It apparently happens that some EDID only contains a 1024x768 mode.

Could you post your EDID so I can check if I'm right ? Also, what's your chipset ?Thank you

@Ezhoon, since when you tested the patch there were bug that would have prevented your system to boot if patch didn't work (no EDID), I think that for some reason, your EDID doesn't contain your native resolution. It apparently happens that some EDID only contains a 1024x768 mode.

Could you post your EDID so I can check if I'm right ? Also, what's your chipset ?Thank you

According to this EDID, native resolution is 1280x800, not 2560x1600. So it will set resolution to 1280x800. Is this what it did? Was the screen stretched? If aspect ratio is correct, it means it worked.

Ezhoon, apparently there is a second location for the VESA table on some nVidia cards. I didn't know that and didn't patch it. I attached an experimental version that should patch the second location also. Could you test it please?

You won't have full res but if it works as it should, you'll have 1280x800, as reported by your EDID.